Effects of the F-number on the generation condition of a diode-laser-sustained plasma.

A laser-sustained plasma (LSP) is a promising method for generating atmospheric-pressure plasmas. Although diode lasers are highly efficient, compact, and low-cost light sources for LSP, previous studies have reported that the laser power required for LSP generation is high, owing to the poor beam quality of diode lasers. In this study, we attempted to generate an LSP using a 4-kW-class diode laser with different F-numbers.

Coronavirus Disease 2019 Complicated by Multiple Simultaneous Intracerebral Hemorrhages.

The relationship between coronavirus disease 2019 (COVID-19) and intracerebral hemorrhage remains unclear. We herein report a case of severe COVID-19 pneumonia complicated by multiple simultaneous intracerebral hemorrhages (MSICH). The patient died eight days after the episode of MSICH.

Delayed posthypoxic leukoencephalopathy following alcohol and psychotropic drug overdose: a case report.

Delayed posthypoxic leukoencephalopathy (DPHL), a demyelinating syndrome, can easily be misdiagnosed as a psychiatric condition. Our case study shows that magnetic resonance imaging is highly useful for an early diagnosis of DPHL and that vascular endothelial growth factor might be a supplementary biomarker for the early detection of DPHL.